Wire-bender



s. M. JOHNSON.

WIRE BENDER.

APPLICATION FILED APR.23, I9I9. 1,316,243. PatentedSept. 16, 1919.

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UNITED STATES PATENT OFFICE.

SMITH M. JOHNSON, OF MIDDLEFIELD, OHIO.

WIRE-BENDER.

To all whom it may concern Be it known that I, SMITH M. JoHNsoN, acitizen of the United States, and a resident of Middlefield, in thecounty of Geauga and State of Ohio, have invented certain new and usefulImprovements in Wire-Benders, of which the following is a specification.

Hy invention is an improvement in wire benders, and has for its objectto provide a device of the character specified especially adapted forforming the loops or eyes on bails, wherein a disk is provided, havingpins extending laterally therefrom for engagement by the wire to bendthe same when the disk is rotated, the device having a guide forfacilitating the engagement of the wire with the pins, and having meansfor limiting the movement of the wire between the pins to the properdegree.

In the drawings:

Figure 1 is a front view of the improved bender;

Fig. 2 is an end view;

Fig. 3 is a similar view of a modified construction.

In the embodiment of the invention shown in Figs. 1 and 2, the machinecomprises a suitable base 1 which may be secured to a table 2 or thelike, and-this base has a long bearing 3 connected therewith by means ofstandards 4:, the bearing being horizontal. A shaft 5 is journaled inthe bearing, and this shaft is provided at one end of the bearing with acylindrical head or disk 6.

At the opposite end a collar 7 is adjustably connected with the shaft,to insure its proper position in the bearing, and beyond the collar apinion 8 is secured to the shaft. A rack bar 9 is mounted to movevertically through the base and table in a bearing sleeve 10 secured tothe base, and the lower end 0f the rack bar is connected with a crank 11on an operating shaft 12 journaled in bearing brackets 13 depending fromthe table.

This shaft has a pulley 1 1 which may be connected by means of a belt 15with a suitable source of power (not shown) for driving the operatingshaft. A pair of pins 16 and 17 extends laterally from the outer face ofthe head 6, one of the pins 16 being eccentric to the disk and ofgreater length than the pin 17, which is concentric with the disk andshaft.

The wire 18 to be bent, which, in the pres- Specification of LettersPatent. Patented Sept. 16, 1919. Application 26186 April 23, 1919.Serial N0. 2532,0 25.

ent instance, is shown as partiallyformed 1n a handle 19 for a pall orthe like, is inserted between the pins and is formed into the loop in amanner to'be described. It will be understood that the pins are sospaced that the wire will just pass between them. Each of these bails,as shown, is substantially U-shaped, comprising a body upon which a gripis mounted to rotate, and arms in the free ends of which the loops oreyes 20 are formed. In order to form the loop or eye the free end of thewire is inserted between the pins 16 and 17, and it will be obvious thata rotation of the shaft 5 will cause the pin 16 to bend the wire aroundthe pin 17 to form the loop 20.

To facilitate the proper spacing of the wire between the pins a guide 21is secured to the base adjacent to the head 6. This .guide has anextension 22 at its upper end,

and this extension has an inclined upper face, extending upwardly andinwardly to the space between the pins, when the said pins are in avertical plane. Just above the inner end of this surface is a lug 23 forlimiting the upward movement of the wire with respect to the pins.

In placing the wire it is slid over the inclined surface of theextension 22 between the pins, and the head is then rotated to bend thewire. A spring stop is provided for limiting the movement of the wirebetween the pins to the proper extent. This stop is a plate 24: which ispivoted to a pin 25 on one of the standards 4 and the upper end of theplate is spring held at the proper position with respect to the head bymeans of a coil spring 26. This spring encircles a bolt 27 which passesat one end through an opening in the plate 24 and is held at the otherby a bracket arm 26 on the base. A nut 29 is threaded on to the bolt onthe 0pposite side of the plate from the spring.

In use, the bail, held as shown in Fig. 2, has one of its arms insertedbetween the pins 16 and 17 the inclined surface of the extension 22acting as a guide for this purpose. The end of the wire is engaged withthe spring stop 24, and now when the head is turned a loop or eye willbe formed in the free end of the bail arm.

The construction shown in Fig. 3 is the same as that shown in Fig. 2,with the exception of the stop for the wire. The stop in thisarrangement is a spring plate 29 which is secured at one end to the baseand the other end is bent over and downward into position to be engagedby the bail Wire 18 at the proper point.

I claim:

1. A device of the character specified comprising a suitable support, ashaft journa'led' on the support and provided at one end with a headmeans for rotating the shaft, said head having an eccentric and aconcentric pin on its outer face for engaging a Wire between the same tobend the Wire, and a yielding gage normally resting against the pins onthe opposite side from Where the Wire is inserted.

2. In a device of the character specified, a head mounted to rotate andhaving an eccentric and a concentric pin on one face for engaging a Wirebetween the same to bend the Wire, and a yielding gage normally restingagainst the pins on the opposite side from Where the Wire is inserted.

SMITH M. JOHNSON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

